<template>
    <div class="bat-bar">
        <div class="item"  @click="changeTab(0)">
            <router-link to="/index" tag="span" :class="tabIndex==0?'active':''">首页</router-link>
        </div>
        <div class="item" @click="changeTab(1)">
            <router-link to="/follow" tag="span" :class="tabIndex==1?'active':''">熟人</router-link>
        </div>
        <div class="item"  @click="changeTab(2)">
            <router-link to="/publish" tag="span" :class="tabIndex==2?'active':''">+</router-link>
        </div>
        <div class="item" @click="changeTab(3)">
            <router-link to="/index" tag="span" :class="tabIndex==3?'active':''">消息</router-link>
        </div>
        <div class="item" @click="changeTab(4)">
            <router-link to="/sign" tag="span" :class="tabIndex==4?'active':''">我</router-link>
        </div>
    </div>
</template>
<script>
export default {
    data(){
        return{
            tabIndex:0
        }
    },
    methods:{
        changeTab(index){
            this.tabIndex = index
            console.log(this.tabIndex);
        }
    }
}
</script>
<style scoped>
.bat-bar{
    height:50px;
    line-height: 50px;
    width:100%;
    background:#000;
    position:fixed;
    bottom:0;
    left:0;
    color:#cccccc;
    font-size: 16px;
    display: flex;
    justify-items: center;
    z-index: 9;
}
.bat-bar .item{
    flex: 1;
    text-align: center;
}
.bat-bar .item .active{
    color:#fff;
}
</style>